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Tijuana: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, Sea-Level Rise and Coasts, Southwest CASC, Tijuana, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags Humboldt, California: Tidal Marsh Bathymetry Digital Elevation Model We performed bathymetric surveys using a shallow-water echo-sounding system (Takekawa et al., 2010, Brand et al., 2012) comprised of an acoustic profiler (Navisound 210; Reson, Inc., Slangerup, Denmark), Leica RTK GPS Viva rover, and laptop computer mounted on a shallow-draft, portable flat-bottom boat (Bass Hunter, Cabelas, Sidney, NE; Figure 7). The RTK GPS obtained high resolution elevations of the water surface (reported precision 10 cm water depth. We recorded twenty depth readings and one GPS location each second along transects spaced 100 m apart perpendicular to the nearby salt marsh. We calibrated the system before use with a bar-check plate and adjusted the sound velocity for salinity and temperature differences.... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Bathymetry Survey, Drought, Fire and Extreme Weather, Extreme Weather, Humboldt Bay, Mad River Slough Marsh, All tags... Sea-Level Rise and Coasts, Southwest CASC, Water, Coasts and Ice, Fewer tags San Pablo, California: Tidal Marsh Bathymetry Digital Elevation Models We performed bathymetric surveys using a shallow-water echo-sounding system (Takekawa et al., 2010, Brand et al., 2012) comprised of an acoustic profiler (Navisound 210; Reson, Inc., Slangerup, Denmark), Leica RTK GPS Viva rover, and laptop computer mounted on a shallow-draft, portable flat-bottom boat (Bass Hunter, Cabelas, Sidney, NE; Figure 7). The RTK GPS obtained high resolution elevations of the water surface (reported precision 10 cm water depth. We recorded twenty depth readings and one GPS location each second along transects spaced 100 m apart perpendicular to the nearby salt marsh. We calibrated the system before use with a bar-check plate and adjusted the sound velocity for salinity and temperature differences.... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Bathymetry Survey, Drought, Fire and Extreme Weather, Extreme Weather, San Pablo Bay, Sea-Level Rise and Coasts, All tags... Southwest CASC, Water, Coasts and Ice, Fewer tags San Pablo, California: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Elevation Survey, Extreme Weather, Marsh, San Pablo, All tags... Sea-Level Rise and Coasts, Southwest CASC, Water, Coasts and Ice, Fewer tags Morro Bay, California: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, Morro Bay, Sea-Level Rise and Coasts, Southwest CASC, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags Pt. Mugu, California: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, Pt. Mugu, Sea-Level Rise and Coasts, Southwest CASC, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags Humboldt, California: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, Humboldt Bay, Sea-Level Rise and Coasts, Southwest CASC, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags Newport, California: Tidal Marsh Bathymetry Digital Elevation Models We performed bathymetric surveys using a shallow-water echo-sounding system (Takekawa et al., 2010, Brand et al., 2012) comprised of an acoustic profiler (Navisound 210; Reson, Inc., Slangerup, Denmark), Leica RTK GPS Viva rover, and laptop computer mounted on a shallow-draft, portable flat-bottom boat (Bass Hunter, Cabelas, Sidney, NE; Figure 7). The RTK GPS obtained high resolution elevations of the water surface (reported precision 10 cm water depth. We recorded twenty depth readings and one GPS location each second along transects spaced 100 m apart perpendicular to the nearby salt marsh. We calibrated the system before use with a bar-check plate and adjusted the sound velocity for salinity and temperature differences.... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Bathymetry Survey, Drought, Fire and Extreme Weather, Extreme Weather, Newport, Sea-Level Rise and Coasts, All tags... Southwest CASC, Water, Coasts and Ice, Fewer tags Morro Bay, California: Tidal Marsh Bathymetry Digital Elevation Models We performed bathymetric surveys using a shallow-water echo-sounding system (Takekawa et al., 2010, Brand et al., 2012) comprised of an acoustic profiler (Navisound 210; Reson, Inc., Slangerup, Denmark), Leica RTK GPS Viva rover, and laptop computer mounted on a shallow-draft, portable flat-bottom boat (Bass Hunter, Cabelas, Sidney, NE; Figure 7). The RTK GPS obtained high resolution elevations of the water surface (reported precision 10 cm water depth. We recorded twenty depth readings and one GPS location each second along transects spaced 100 m apart perpendicular to the nearby salt marsh. We calibrated the system before use with a bar-check plate and adjusted the sound velocity for salinity and temperature differences.... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Bathymetry Survey, Drought, Fire and Extreme Weather, Extreme Weather, Morro Bay, Sea-Level Rise and Coasts, All tags... Southwest CASC, Water, Coasts and Ice, Fewer tags Bolinas, California: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Bolinas Lagoon, Drought, Fire and Extreme Weather, Extreme Weather, Sea-Level Rise and Coasts, Southwest CASC, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags Newport, CA: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, Newport Bay, Sea-Level Rise and Coasts, Southwest CASC, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags